Safety-razor-blade stropper



April 1929. e. w. Hoos ET AL 1,709,172

SAFET? RAZOR BLADE STROPPER Original Filed July 10, 1926 2 Sheets-Sheetl 2 MW INVENTOR. 3% g 5% ATTORNEY,

Apr ill6, 1929. G w HOOS E'IV'AL 1,109,172

"SAFETY RAZOR BLADE STROPPER Original Filed July 10, 1926 2 Sheets-Sheet2 Frail Pied?) F168. PIC; 10. gg

3 n ATTORNEY.

Patented Apr. 16, 192 9.

GEORGE W. HOOS AND RALPH B.

STANFORD, OF BALTIMORE, MARYLAND, ASSIGNORS TO GEORGE W. HOOS, TRUSTEE,0F BALTIMORE, MARYLAND.

' SAFETY-RAZOR-BLADE STROPPER.

Application filed July 10, 1926, Seria1.N0. 121,565. Renewed September20, 1928.

The object of our invention is simplifying the construction of stroppersof wellknown type as hereinafter set forth, having our improvementsembodied therein.

. A further object of our'invention is providing an improved grippingdevice prefer ably integral with the means of a stropper. v

A further object of our invention is the providing of improved Ineansforconnectprimary driving ing the primary driving meansv to the driven lconstruction, combination and arrangement,

parts of a stropper. g V v v A further object of our invention is animproved power operating means.

A. further objectof our invention is an improved means for maintainingin position the various parts of the stropper.

A-further object of our invention is the providing an improved :means'of assembly of the various parts of a stropper.

A further object of our invention is the providing of an improved meansfor bold ing the bladesin a stropper. A further object ofour inventionis an improved means for indicating the position of the bladeforextraction.

I A further object of our invention is the providing of improved meansfor securing the operative driven parts withinthe casing.

vA furtherobject' of ourinvention is an improved means for forming orsecuring the various parts of a stropper together.

A further object. of our invention is the providing an improved caseand'means of construction. I Y

With the foregoing and other objects in view, our invention consists ofthe'novel of parts as hereinafter specifically described and illustratedin theaccompanying draw- I ing, wherein is shown the'preferredembodiment of our invention, but it is understood that changes,variations and modifications may beresorted to which come within the,

scope of the claims hereunto appended.

In the drawings of the herein-described embodiment of our invention,Figure 1 is a plan view, partly insection, of our improved stropper;Fig. 2 is a side view in elevation, partly in'section, of the same:Fig.3 is a sectional view taken on line 3 3 of Fig. 1;

Fig. l is an'end view in elevation, looking" in the direction of thearrow shown in Fig. 1; Fig. 5 is a plan view of the spiral driving cam14 and handle 15; Fig. 6 is an end view causes them to burr in elevationof looking in thedirect-ion of the arrows; Fig. 1s a planview of thebridge 17, Fig. 8 being a side view in elevationof the same; Fig. 9 isaplan view of the shuttle washer 13, Fig. 1Qbe1ng a side view inelevation of the same; F g. 11 is a plan view of the roller tube 9, Fig.12 being an end view in elevation of the same; Fig. 13 is'a plan view ofthe blank from which theroller tube 9 is formed; Fig. is a plan view ofthe blade-holder 21. Fig. 15 being aside view in elevation of the same;Fig. 16 is a plan view of the blank from which the blade-holder 21 isformed, and Fig. 17 is, an end'view in elevation of the blade-holder.

"Similar numerals refer to similar parts throughout the severallviews.

1 is the casing body, preferably stamped out of sheet metal from theflat and formed in such shapes as shown in Fig. 1, Fig. 2, and Fig. 3,the edges'being joined together as shown at 2 in said'figuresbystaggered intermeshing projections. 3 is the head of the operating endofthe casing. 4 is the head of the blade insertion end of the casing.Heads 3 and 4: are secured to body 1 by looking projections 5 on body 1looking over depressed portions 6 in said heads. prepared surface ofthestrop, which may be of leather or any other material suitable for such apurpose. This surface of the stropis mounted to form a roll, preferablyon a wooden body 8, by means of glue or otherwise. I /Vehave found thatoccasionally tacking or other securing means is desirable. The woodenbody 8 is mounted on roller tube 9 and secured thereon by any 'welhknownmeans. We have found that a neat lit and the securing tacks 10 a littlelong which against the side of the roller tube 9 is sufiicient to securethe same.

In roller tubes 9 are slots11 through which 'the projections 12 of theshuttle washer 13 pro ect; these slots in the apparatus shown in thedrawing are two in number, one not extending'to the end of the tube 9and the one opposite extending to the end of the tube 9. This featurepermits of the introduction of shuttle washer 13 on to roller tube 9with its projections 12in said slots 11 without bending 0r springingeither of said parts. 14; is the spiral driving cam, in the drawingsshown as two in number, formed integral with handle 15 preferably fromflat stock. i

the part shown in Fig. .5,

7 is the These cams operate within roller tube 9 and drive shuttlewasher 13 by means of carry said the projections 12 on said washerope-rating against the surface of the spiral andthereby driving saidshuttle washer 13 which rotatively operates roller tubes. 16 is a pistonor Washer carried by spiral driving cam lt operating within roller tube9to steady and driving cam and act a stop to limit its withdrawal fromsaid tube when contacting With'shuttle washer 13. i 17 is the bridgewhich is formed with retaining members 18 stamped and bent so as tocarry shuttle washer 13 permitting rotation thereof, but securing theposition longitudinally thereof relatively with reference to saidbridge. In bridge 17 is also operating opening 19 through which bladereverse cam spiral 20, operates;

21 is the blade holder. We have found that the blade holder can becheaply and very successfully stamped when formed from sheet metal; andin doing this we provide a handle 22 formed to lay parallel with therazor blade when in position to indicate its position within thestropping machine when I a withdrawal of the same is desired. 23 andoperating 24 are projectionsto register with the holes in the razorblade for positioning purposes. Portions 25 and 26 are cylindricalformed surfaces, or guides,.for operating within double slotted tube 27.28 is a projecti'on acting as a stop in the withdrawal of the bladeholder to limit itsmovement outward, the same bringing up againstthehead on the inside. In cylindrical portion 26 undercut 29 is made tofacilitate the holding 1 of the blade in withdrawal. Projection 30 isformed with a similar undercut.

Double slotted tube 27 permits the razor blade 31 carried byblade-holder 21 to project on both'sides thereof'through said slots,

. said slots being open to the end ofsaid tube cured at one end whichend revolves in head 4 as a-bearing, and whichhead is provided withopening 32 to permit the withdrawal of the blade, the other end of saidtube being se-. to blade reverse cam spiral 20 and is operated thereby.Said reverse cam spiral '20 is journalled in a depression in end 3 ofthe casing and is provided, with an exterior washer secured to saidspiral to prevent relatively 'endwise displacement, but permittingrotation. .Bridge 17 operates said spiral 20 two surfaces are shown, butthree or more may be used, if deslred. We have used three verysuccessfully, and do not wish to be limited to any number. 7 7V V v Inthis specification and claims, when we use the term f twisted members,we' mean thereby spiral members. 7 I

Having thus described our invention, what we ,claim and desire to secureby Letters Patent is:

1. A razor stropper comprlsing a stropping roll, a tube forming amounting shaft therefor, a spiral cam rod reciprocable to rotate saldroll, a shuttle washer having a perforation to surround-the spiral camrod and having inward projectionsito engage the grooves of the cam, theroller mounting tube also passing through said perforation and'slottedto permit said projections of said shuttle washer to pass therethroughand so that-the tube may slide axially through said shuttle washer, butmay also be rotated thereby, one' of said slots extending to the end ofsaid tube to permit ready assembly by threading of the spiral cam rodand tube through said shuttle washer; 1

2. A. razor stropper comprising, stropping rolls, mounted upon tubes,within which telescope spiral cam reds shuttle washers having apertureswith inward projections engaging the grooves of the spiralcam rodsand'also passing through slots'initheprojecting ends of the rollermounting tubes, a bridge-plate having apertures re'giste ring with thoseof the shuttle washers and overhanging flanges which position and retainsaidshuttle-washers in contact with one side of bridge-plate. V

GEORGE W. HOOS.

- j RALPH B. STANFORD.

